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Thread: RV CB Radios
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01-26-2021, 06:36 PM #11
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I have a Uniden permanently installed and always on. For the $100 I spent on it, it can be mildly entertaining. Other than that it has be really useful a handful of times. It turns out when something happens up ahead, the CB is faster than Google Maps, Waze or anything else. It's saved us getting tied up in traffic jams a few times, by getting the fast alert from some truckers and taking the next exit.
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01-26-2021, 07:41 PM #12
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At the risk of going down the rabbit hole we use GMRS when there is no cell service. I also use Ham Radio. GMRS is much better for general use or if you are caravanning with others as many people have them. They come in handheld or mobile format. Look at Midland mobile. UHF/VHF frequency ham radios also come in mobile or handheld formats. I have my handhelds programmed to receive GMRS, MURS, marine VHF and ham radio frequencies. The handhelds are Beofang and I have a 25 watt mobile and wire antenna mounted in an ammo can with a small 7ah battery and a 2 amp charger. I have gotten out 20 plus miles plus with that set up.
Note, off road guys are going GMRS more and more. Also note that mobile units with better antennas generally put out more power for longer range. I am a general class license holder but don’t want to get too technical.Last edited by Scramjet; 01-26-2021 at 08:05 PM.
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01-26-2021, 08:11 PM #13
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I've always had a CB in the truck (and Class A when I had them). They use to be a lot more useful and truckers would even talk to me once in a while (a long time ago).
Last week I ran up to Charlotte (from I95 near Cape Canaveral). Today we drove home. I pretty much turned the volume down both way - a lot. Seems mostly there is just useless chatter these days. But there is the occasional notice of an incident ahead and when in a traffic slow down there is some useful information there.
I use one of those CBs with everything on the mic (volume, squelch, channel selector, etc.) and a separate amplified speaker.
fwiw..... here is my Firestick antenna..... I made the mount and it bolts to a fender bolt.
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01-27-2021, 06:23 AM #14
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I have wondered about a license for Ham radio and what it would take to get one. It would be a great tool in a grid-down scenario. I'll look into GMRS though -- I believe you need a license for that as well. -- Just trying to think ahead (and reading a prepper book I got for Christmas :-).
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01-27-2021, 06:25 AM #15
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01-27-2021, 09:23 AM #16
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OK now we're talking. :-) I always thought GMRS were just glorified walkie talkies...but now that I'm looking, these are way more powerful than CB radios. 50 watts?? 36+ mile range? wow
https://www.amazon.com/Midland-GXT10.../dp/B013QIFCLE
https://www.amazon.com/gp/product/B07RDM9LMM
Are there any recommended brands and features to look for in these radios? I think these would be the ticket with a good antenna, over the 4w CB radios.Last edited by bryancass; 01-27-2021 at 09:27 AM.
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01-27-2021, 09:25 AM #17
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@bryancass I'll quibble with a couple of assertions above that GMRS provides better range than CB. While other assertions about wider usage (more people have them) are true, they do not typically have better range and can have more-limited range than CB.
GMRS radios in the U.S. offer five watts of power (in Canada they are limited to TWO watts!) while CB radios offer four watts. The difference is almost completely insignificant in terms of performance and range.
Further, GMRS operates on higher frequencies that are more prone to degradation by obstacles so on anything but flat ground / water a GMRS radio might not have range even as good as a CB.
Finally, while there are mobile GMRS radios the vast majority of them out there are handhelds. They suffer from the same compromised-antenna limitations as other handheld radios, and it's frequently not possible to easily connect GMRS radios to better mobile antennas.
So don't buy GMRS expecting you'll get better range - with a handheld you'll often find range limited to a mile or two. Maybe buy GMRS because there are lots more of them around (although that sometimes means their channels are busier/noisier) and because their FM modulation gives them quieter reception (less of the hiss and white noise found on AM/CB).
You do need a license to use GMRS in the U.S. but it's just a simple application and fee, no study required.
Getting your amateur radio license is not a trifle. It usually requires weeks of study of many technical and legal aspects of radio transmission and then a written examination. However the amateur license legalizes your use of much more powerful radios and the studying gives you the knowledge to get the most from them. You may also enjoy radio as a hobby and not just an emergency/survival tool.
There's lots of information at the link below about getting an amateur license, but it's usually best to search the web for local amateurs and their club to get information and support to make the education and test less-daunting.
http://www.arrl.org/licensing-education-trainingLast edited by boyscout; 01-27-2021 at 09:27 AM.
Mark - 2018 Solitude 310GK - 2017 F-350 diesel SRW short box - Pullrite Superglide hitch
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01-27-2021, 09:31 AM #18
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Thanks for the link, I will check that out. Radio has always interested me (I was a Boy Scout too and wondered about that merit badge), and maybe it would be a good 'retirement' hobby.
Regarding GMRS, you mentioned only 5 watts... but what am I seeing here at 50w? https://www.amazon.com/gp/product/B07RDM9LMM2017 Imagine 2150RB
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01-27-2021, 10:20 AM #19
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It's a mobile, not nearly so common as the handheld ones. The mobile would certainly provide longer range than those and CB radios, similar to mobile UHF ham radios, but they're called "two-way" radios because most people use them to both talk and listen. The mobile will get your communication out further but if people hearing you are using the much-more-common handhelds you may not be able to hear them.
I thought you said you were inclined to getting a handheld - did I get that wrong?Mark - 2018 Solitude 310GK - 2017 F-350 diesel SRW short box - Pullrite Superglide hitch
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01-27-2021, 10:31 AM #20
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Many handhelds actually put out as little as .5 watts. The Ham handhelds typically put out about 4-5 watts. The GMRS Midland mobile units go from 15 to 40 watts and come with much better antennas. Handhelds are the ones that look like walky talkies. Mobile radios mount in your car (or whatever) and run off of 12v.
I found that the ham test was fairly easy now that morse code is not required. It does take some study time but not difficult.
Range is a difficult thing to pin down. CB radios are AM transmissions and do bounce and can give you a better range around obstacles. GMRS radios are more line of sight radios but with good power and a good antenna you can get quite a long range. The handheld bubble pack radios that say 36 miles are wildly optimistic. Under normal conditions 1 to 2 miles is typical.
One of the best prepper books is the ultimate preppers guide by Rawles. You’ll discover it is not just communications that is important. You need to also cover self-defense food storage water and medical at a minimum. You could really go down the rabbit hole on this one.Last edited by Scramjet; 01-27-2021 at 11:01 AM.
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